[issue37009] Threading and THREAD_SAFE for AIX

[Christian Heimes]

Change by Christian Heimes <lists at cheimes.de>:


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versions: +Python 3.10, Python 3.9 -Python 2.7, Python 3.5, Python 3.6, Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37009>
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